Estudio in vitro de la resistencia compresiva del Graphenano Dental sometido a termociclado

Abstract

Introduction: Currently, nanotechnology has allowed the development of new materials used to complete or completely replace the dental piece, attributing properties that improve its behavior and durability. This G-CAM disc is indicated for the realization of permanent dental restorations. However, being such a novel compound, there is no scientific evidence to corroborate the effectiveness of its properties in the oral cavity. Objective: To evaluate the compressive strength of G-CAM subjected to thermocycling in different periods of time. Methods: The study design is experimental in vitro obtained 80 sheets of G-CAM graphene with measurements of 12 x 14 x 0.6 mm, distributed in 4 groups; T0 or control group exposed to compressive stress, and groups T1, T2 and T3, before being subjected to compression in the Instron testing machine, 1,000, 3,000 and 5,000 cycles will be applied in the thermocycler to simulate oral conditions. Finally, the values corresponding to the compressive effort and the time of occurrence of the failure in seconds were obtained to be analyzed. Results: the mean fracture resistance value of the 80 G-CAM sheets that were part of the study was 0.98 SD [±0.79-1.45 N] (5.85 SD [±2.45- 9.28] MPa), showing that the minimum fracture resistance value was 0.41 N (2.45 MPa) and the maximum value was 1.55 N (9.28 MPa). In relation to the time in seconds, it is anticipated that the average time in which the 80 plates appeared the fracture was 51.81 seconds, with a minimum time of occurrences of 20.8 seconds and a maximum time of occurrences of 87.75 seconds Conclusions: The average compressive strength of G-CAM graphene was 0.98 SD [±0.79-1.45 N] with a sample failure time of occurrence of 51.81 seconds.